<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>testObs</title>
</head>
<body>
<form action="/upload" enctype="multipart/form-data" method="post">
    <input type="file" name="file"/>
    <input type="submit" value="upload">
</form>
<form action="/download" enctype="multipart/form-data" method="post">
    <input name="fileName"/>
    <input type="submit" value="download">
</form>
<form action="/share" enctype="multipart/form-data" method="post">
    <input name="fileName"/>
    <input type="submit" value="share">
</form>
</body>
</html>
